Week 4 of the 2017 Reebok CrossFit Games Open brought two fierce competitors to Mexico City, Mexico. How close was the showdown between the sixth-fittest woman at last year’s Games, Brooke Wells, and the fittest woman in Mexico, Brenda Castro?

Athletes have until Monday, March 20, at 5 p.m. PT to complete Open Workout 17.4 and log scores at Games.CrossFit.com. If you participated in the Open last year, don’t forget to check your 16.4 score so you can set a new goal for this year.